Q Light Controller+

Posted: **Thu May 09, 2024 10:30 pm**

Hello everybody,

I'd like to contribute to this wonderful project by implementing support for a most overlooked yet powerful feature of the DE/FX5/Nodle DMX devices: The integrated merger mode.

All those devices have an input and an output port and offer a mode that transforms the device into being an HTP merger that takes the DMX inbound values and (depending on whether the device is set to input, output, both, or none):

a) merges those input values with the output values coming from QLC+ (in HTP mode), or
b) sends input values to QLC+ while sending the same values to the output, or
c) sends input values to QLC+ AND merges those input values with the output values coming from QLC+ (in HTP mode).

A complete mode list of the devices is:

: Modes; forum-modes.png (4.54 KiB) Viewed 1410 times

0: Do nothing - Standby
1: DMX In -> DMX Out
2: PC Out -> DMX Out
3: DMX In + PC Out -> DMX Out
4: DMX In -> PC In
5: DMX In -> DMX Out & DMX In -> PC In
6: PC Out -> DMX Out & DMX In -> PC In
7: DMX In + PC Out -> DMX Out & DMX In -> PC In

But until now modes 1, 3, 5, and 7 are not yet implemented.

Internally, this implementation is easy, because it just adds another 1 to the device driver mode.

Like so in plugins/hid/hiddmxdevice.cpp (last two lines):

Code: Select all

void HIDDMXDevice::updateMode()
{
    /**
    *  Send chosen mode to the HID DMX device
    */
    unsigned char driver_mode = 0;
    if (m_mode & DMX_MODE_OUTPUT)
        driver_mode += 2;
    if (m_mode & DMX_MODE_INPUT)
        driver_mode += 4;
    if (m_mode & DMX_MODE_MERGER)
        driver_mode += 1;

GUI-wise it's a bit more complicated. I'd propose to set this as a setting in the HID device config list:

: GUI; forum2.png (10.05 KiB) Viewed 1410 times

But as those devices are HID devices suddenly all HID devices (Joysticks and the like) get this checkbox too which only makes sense for the beforementioned devices.

Has somebody any proposal on this one?

Should the mentioned devices be separated from HIDDevices or should all the other HIDDevices just disable this checkbox or is there a more clever approach for setting this setting?

Thanks and regards.

Posted: **Fri May 10, 2024 6:35 am**

Hi, at the moment there is no flag to distinguish between a DMX device or something else
However it's pretty easy to add it upon detection here:
https://github.com/mcallegari/qlcplus/b ... n.cpp#L278

Posted: **Fri May 10, 2024 7:01 am**

Thank you for your fast reply.

So UI-wise you would say it's okay to add a column to the list at the HID configuration dialog that is only used by HID DMX devices (for this checkbox) and left unused by all other HID devices?

Posted: **Fri May 10, 2024 10:14 am**

Yeah, it makes sense to add a checkbox in the config dialog.

Q Light Controller+

Merger mode for DE/FX5/Nodle DMX devices

Merger mode for DE/FX5/Nodle DMX devices

Re: Merger mode for DE/FX5/Nodle DMX devices

Re: Merger mode for DE/FX5/Nodle DMX devices

Re: Merger mode for DE/FX5/Nodle DMX devices